Just as a test, place this in a file called lazy-simple.php<?php
/* Don't remove this line. */
require('./wp-blog-header.php');
?>
<link href="./wp-content/plugins/lazy-gallery/lazy-style.css" rel="stylesheet" type="text/css">
<?php showGallery();?>

I wanted new features and didn't want to wait. So I wrote the features myself. I've offered to include the new features into the main lazy gallery code, but the people who currently maintain that code (which is itself a fork of the original code that you have) are on vacation or something.